@Component({
  selector: 'filters-cmp',
  template: `
    {{f.controls.speaker == null}}

    <form #f="ngForm" (submit)="applyFilters()">
      <input ngModel name="speaker" placeholder="Speaker">
      <input ngModel name="title" placeholder="Title">
      <input ngModel name="highRating" type="checkbox">High Rating
    </form>
  `
})
export class FiltersCmp {
  //...
}